Mark IIC (not IIC+) schematic

[chipaudette]

Hi All,

I just got a Mark IIC (not IIC+) from a fellow board member (thanks gts!). I'm curious about the circuit changes from the IIC to the IIC+. I can find IIC+ schematics on the web, but no IIC schematics for comparison.

Does anyone have a schematic for the IIC? Does anyone know the mods that'll be done by MikeB if I send it to Mesa for the IIC+ upgrade?

Thanks,

Chip